/*
 * Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *   Free SoftwareFoundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.make;

import java.util.ArrayList;

/**
 * Contains a set of make rules.
 */
public class MakeContainer implements Make {
  private ArrayList<Make> _makeList = new ArrayList<Make>();

  /**
   * Adds a dependency.
   */
  public void add(Make make)
  {
    if (make == this)
      throw new IllegalArgumentException("Can't add self as a dependency.");

    int p = _makeList.indexOf(make);

    // matching make overrides old ones
    // server/10ik
    if (p >= 0) {
      Make oldMake = _makeList.get(p);

      if (oldMake != make)
        _makeList.add(p, make);
    }
    else
      _makeList.add(make);
  }
      
  /**
   * Returns true if the underlying dependencies have changed.
   */
  public void make()
    throws Exception
  {
    for (int i = 0; i < _makeList.size(); i++) {
      Make make = _makeList.get(i);

      make.make();
    }
  }

  public String toString()
  {
    return "MakeContainer" + _makeList;
  }
}
